Air Handling Unit Construction Checklist

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Emery Shelton
5 years ago
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1 Air Handling Unit Construction Checklist Project: Date: AHU Tag: Location: Submittal / Approvals Submittal. The above equipment and systems integral to them are complete and ready for functional testing. The checklist items are complete and have been checked off only by parties having direct knowledge of the event, as marked below, respective to each responsible contractor. This construction checklist is submitted for approval, subject to an attached list of outstanding items yet to be completed. A Statement of Correction will be submitted upon completion of any outstanding areas. None of the outstanding items preclude safe and reliable functional tests being performed. List attached. Mechanical Contractor Date Controls Contractor Date Electrical Contractor Date Sheet Metal Contractor Date TAB Contractor Date Turner Date Construction checklist items are to be completed as part of startup and initial checkout, preparatory to functional testing. This checklist does not take the place of the manufacturer s recommended checkout and startup procedures or report. If this form is not used for documenting, one of similar rigor shall be used. Contractors assigned responsibility for sections of the checklist shall be responsible to see that checklist items by their subcontractors are completed and checked off. Approvals. This filled-out checklist has been reviewed. Its completion is approved with the exceptions noted below. Commissioning Authority Date Owner s Representative Date AHU Construction Checklist Page 1 of 7 4/14/2009

2 AHU Information Make Model Number Serial Number Capacity CFM Volts/Phase Function Service Area Components Included Supply Fan Filter(s) Cooling Coil VFD(s) Smoke Detectors Other Compressors Associated Checklists Sec. Chilled Water Pump Condensate Piping BMS FAS Other Other Requested documentation submitted Rec d Comments Manufacturer s cut sheets Performance data (fan curves, coil data, etc.) Installation and startup manual and plan O&M manuals Factory test results Sequences and control strategies Warranty Certificate AHU Construction Checklist Page 2 of 7 4/14/2009

3 Pre-construction Checks Check if Acceptable; Provide comment if unacceptable NA Comment Equipment checked against the Bill of Lading. List missing pieces. Model & Serial numbers recorded at time of receipt of unit Equipment inspected for shipping damage. Equipment matches approved submittals. Equipment labeling verified against the drawings and specifications and submittals. Equipment installed in correct location with proper orientation. Equipment properly protected from dust & debris. Sufficient lighting available for workers on this equipment. Unit installed with recommended clearances per approved submittal Installation Checks General Cabinet and general installation Permanent labels affixed, including for fans Casing condition good: no dents, leaks, door gaskets installed Access doors close tightly - no leaks Connection between duct and unit tight and in good condition Vibration isolation equipment (pads) installed Maintenance access acceptable for unit and components Sound attenuation installed Thermal insulation properly installed and according to specification AHU Construction Checklist Page 3 of 7 4/14/2009

4 Installation Checks Instrumentation installed according to specification (thermometers, pressure gages, etc.) Clean up of equipment completed per contract documents Filters installed and replacement type and efficiency permanently affixed to housing--construction filters removed Valves, Piping and Coils Pipe fittings complete and pipes properly supported Pipes properly labeled Pipes properly insulated Piping system properly flushed No leaking apparent around fittings All coils are clean and fins are in good condition All condensate drain pans clean and slope to drain, per spec Valves properly labeled Valves installed in proper direction OSAT, MAT, SAT, RAT, chilled water supply sensors properly located and secure (related OSAT sensor shielded) Test plugs (P/T) and isolation valves installed per drawings Supply fan and motor alignment correct Supply fan belt tension and condition good Supply fan protective shrouds for belts in place and secure Supply fan area clean Supply fan and motor properly lubricated Fan & dampers interlocked Filters clean and tight fitting Fans and Dampers Filter pressure differential measuring device installed and functional (magnehelic, inclined manometer, etc.) Smoke and fire dampers installed properly per contract docs (proper location, access doors, appropriate ratings verified) All dampers close tightly All damper actuators installed Ducts Duct joint sealant properly installed No apparent severe duct restrictions Turning vanes in square elbows as per drawings OSA intakes located away from pollutant sources & exhaust outlets Pressure leakage tests completed AHU Construction Checklist Page 4 of 7 4/14/2009

5 Installation Checks Branch duct control dampers operable Ducts cleaned as per specifications Balancing dampers installed as per drawings and TAB s site visit Electrical and Controls Power disconnects located within sight of the unit it controls and labeled All electric connections tight Grounding installed for components and unit Safeties installed and operational Starter overload breakers installed and correct size All control devices and wiring complete Control system interlocks connected and functional Smoke detectors in place VFD (as applicable) Installation per manufacturer's requirements and start up instructions completed Drive location not subject to excessive moisture or dirt Drive location not subject to excessive temperatures Appropriate Volts vs. Hz curve is being used Drive size matches motor size Drive mounted on house keeping pad (if applicable) Cooling air flow path clean and unobstructed Permanent label affixed and UL stamp approved VFD interlocked to control system Unit is programmed with full written programming record on site Accel time set to and Decel time set to Operation checked in HAND, OFF, and AUTO. As applicable operation also checked in BYPASS Where applicable, ensure safeties are active in all modes Coordinated with BMS for all interface ranges and signal isolation Restart on Power Failure parameter set to auto VFD powered (wired to controlled equipment) Grounding installed for components and unit Drive min and max speed set to Hz min and 60 Hz max Security settings set per Owner direction and Password documented for Owner Drive response to loss of signal set to Output pulse resolution set to MHz. (This is coordinated with the application to minimize audible noise and coordinated with driven bearing allowances.) Checked the input voltage with drive disconnected AHU Construction Checklist Page 5 of 7 4/14/2009

6 Installation Checks Input of motor FLA represents 100% to 105% of motor FLA rating Upper frequency limit set at 100%, unless explained otherwise Temperature, pressure and flow gages and sensors installed Sensors and Gages Piping gages, BMS and associated panel temperature and pressure readouts match. TAB Installation of system and balancing devices allowed balancing to be completed following specified NEBB or AABC procedures and contract documents Installation Checks Compressors Maintenance access acceptable for compressor replacement Insulation properly installed and according to specification Verify: Refrigerant as approved by engineer: R407c All required labels (safety, refrigerant, instructions, warnings,) are immediately visible. MSDS information available on site for this refrigerant. Verify: 4-Way reversing valve & suction line accumulator Verify: Expansion valve with replaceable thermostatic element Verify: High Pressure Switch Verify: Low Pressure Switch Verify: T stat for coil freeze protection during low temp operation or loss of air during operation Verify: Brass service valves in discharge & liquid lines. Verify: Refrigerant dryer Verify: Low Ambient Switch Operational Checks s Supply fan rotation correct (If VFD, check rotation in bypass and VFD Inverter mode) Supply fan has no unusual noise or vibration Inlet vanes aligned in housing, actuator spanned, modulate smoothly and proportional to input signal and EMS readout All dampers (OSA, RA, EA, etc.) stroke fully without binding and spans calibrated and BMS reading site verified Valves stroke fully and easily and spanning is calibrated AHU Construction Checklist Page 6 of 7 4/14/2009

7 Operational Checks s Valves verified to not be leaking through coils when closed at normal operating pressure Specified point-to-point checks have been completed and documentation record submitted for this system Sensor and Actuator Calibration All field-installed sensors and gages, and all actuators (dampers and valves) on this piece of equipment shall be calibrated in accordance with Specification Section All test instruments shall have had a certified calibration within the last 12 months: Y/N. Sensors installed in the unit at the factory with calibration certification provided need not be field calibrated. Sensor or Actuator Tag & Location Location OK 1 st Gage or BMS Value Instrument Measured Value Final Gage or BMS Value Pass Y / N AHU Construction Checklist Page 7 of 7 4/14/2009

BAS Construction Checklist

BAS Construction Checklist Project: Building: Location: Submittal / Approvals Submittal. The above equipment and systems integral to them are complete and ready for functional testing. The checklist items